Improvement in machines for upsetting bolts



dniicd (Staten parte onine.

, snrn A. BnIsooE, of Detroit, in the county of Wayne `bore through the center of the shaft B, and atits half C of the clutch is brought into engagement with BENJAMIN BRISCOE AND JOSPH A.V BRISCOE, yOF DETROIT, .MICHIGAN ASSIGNORS TO THE MICHIGAN BOLT AND NUTV COMPANY, OF SAME PLACE.

Letters Patent No. 112,775, dated March 21, 1871.

IMPROVEMENT IN MACHINES FOR UPSETTING BOLTS.

The Schedule` referred to In these Letters Patent andmaklng part of the same.

To whom it may concern:

Be it known that wyBnNJAMIN BnIscon and J oand State of Michigan, have invented a new and useful Improvement in Machine for Upsetting Bridge and other Bolts; and we do declare that the follow ingis'a true and accurate description thereof,.refer ence being had to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which-- Figure l is a perspective of our improved machine.

Figure 2 is a vertical longitudinal section..v

Figure 3 is a perspective of the drivingshaft,show ing our improved clutch.

Figure 4 is a perspective of one of the dies.

Like vletters refer to like parts in each ligure'.

The nature of this' invention relates to an inproved construction of a machine for upsetting the ends of bolts, where itis desired that the bolt should be of a uniform size, and not weakened by cutting the necessary thread to engagewith the but.; "iuother words, a machine that will upset the ends of said bolts to the extent of the depth'of the thread. The invention consists in the method of frming the heads of bolts, and in the combination and arrangement of the devices employed for that purpose, all as more fully hereinafter described.

In the accompanying drawing- A represents the two sides of aframe which sustains the operating parts of the device.

At one end o f this frame is securely journaled the shaft B, which, near the center of. itslength, is provided with a cam, a, for the purpose hereinai'ter specified.

C is one-half of a clutch, which is sleeved on the end -of the shaft B, and secured in its rotation therewith by the keys h, in such a manner that tlieclutch may vhave a lateral movement, said keys acting as slides to govern said lateral movement.

D is the other half of the clutch, which is secured to the pulley S, and it is sleeved upon said shaft, and only communicates motion "thereto when in engagement with the other half C of the clutch.

E isa yoke secured to half O of the clutch, and has, in turn, secured to itsl center the connecting-rod F, which. passes longitudinally through a suitable opposite end said connecting-rod is pivoted to a handle, G, the lower end of which is pivotedto the frame A.

The pulley S, with its half D of the clutch, runs as a loose pulley on the shaft B, except when,A by means of the handle and connecting-rod, the other the half D.

H is a box with 'an oritice through the same, as

shown in iig. 2, and forms a cam-yoke, within which the shaft B, with its cam a, rotates.

This box has a reciprocating motion upon theslides I, upon the'inner sides of the frame.

Near its front end this box has a wedge-shaped slot cut through it, within which the wedge K has a vertical 'movement by means of the screw M and hand-wheel V, whichare sustained by the yoke L, the lower part of which is secured to the top of the box `lil.

Y J' is a ram tted into a suitable Aorifice in the front end of the box, as shown, and the rear end of this ram extends rearward until it impiuges against the wedge-K.

N N are two plates fitting betweenV the sides of the frame, where they are held in place and iu relation to each other by means of the keys or wedges d d.

,These plates are provided, upon their inner edges, with grooves or channels b, corresponding in diameter to the size of the bolt R, upon which it isdesigned to operate. l

This channel is enlarged to form a die, O, land when theplatesy are in places the channel should be 4in line with the lin'evof motion of the ram J,

A P are grooved cam-guides, for steadyiug and holding the bolt It while being operated ,npon. f In the operation of this machine, the bolt R, which is to be upset, is inserted in the channel b, in the plates N, until its inner en d projects to the end of the die-part O thereof.

' The wedge K is partially withdrawn by means of the 4hand-wheel V and screw M.

The two half-cheeks are then thrown into engagement, when the shaft B is rotated by means ofthe pulley S and any convenient power.

In the rotation of the shaft, the cam a gives a horizontal reciprocating motion tc the box H, and the-- ram J inserted in the end thereof.

At each reciprocation the ram strikes against the head of the bolt presented within the die O and up-` sets the same, the grooved cams P holding-the bolt iirm in its place.

The operator, at each forward reciprocation of the box, gives a turn to the hand-wheel V, which compels the wedge K to enter further, thereby giving a longerstroke to the rain. This operation is repeated until the end of the bolt is upset sulciently to ill the die O.

-What we claim as our invention, and Vdesire to secure by Letters Patent, isV

As au improvement in the method of forming the heads of' bolts, supplementing the upsetting action of the heading-tool, when forced up and held by a cam in the usual manner, by another action of said heading-tool, eiected' by forcing the wedge K down between the rear end of said tool and a solid bearing in the block H, as herein described.

' BENJAMIN BRISCOE. Witnesses: JOSEPH A. BRISGOE.

M. STEWART, H. F. EBERTS. 

